Grounding the machine is always necessary for the normal operation of the machine. 为了正常安全运转，应安装地线。
This paper proposes the methods of design and imple-mentation of a type of multi-antennae WLAN based detecting sys-tem of transformer substation grounded line. 提出了一种基于多天线无线局域网的变电站地线监测系统的设计与实现方法。
